Hydrophilic polyurethane emulsions and materials produced therefrom
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United States of America Patent
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Apr 24, 1990
Grant Date -
N/A
app pub date -
Jan 30, 1989
filing date -
Jan 30, 1989
priority date (Note) -
Expired
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Abstract
Solvent-free water-based emulsions of hydrophilic polyurethane polymers, their preparation and solvent-free coatings produced from the emulsions are described. Also described are compositions produced by subjecting a homogeneous blend of a curable polymer precursor such as rubber latex and the polyurethane emulsion to curing conditions. Moisture permeable membranes, water swellable sealants, extruded shapes and active agent media are produced from the composition.
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